某商用车转向直拉杆失稳弯曲变形分析  

Analysis of Instablity Bending Deformation Of a Commercial Vehicle Steering Straight Rod

作　　者：杨珍 耿海军 YANG Zhen;GENG Hai-jun(Hubei Dayun Automobile Manufacture Co.,Ltd.R&D Center,Shiyan 442500,China)

机构地区：[1]湖北大运汽车有限公司技术中心,十堰442500

出　　处：《汽车科技》2020年第1期86-90,共5页Auto Sci-Tech

摘　　要：某商用车转向拉杆在整车下线极限转向测试工况后,出现转向直拉杆弯曲变形现象。本文通过对直拉杆弯曲塑性变形问题的原因解析、方案验证,表明转向直拉杆的临界稳定性是产生问题的根本原因,提出来了一套转向直拉杆压杆稳定性的计算方法和安全系数的选取原则,可以有规避决该类问题发生。After a commercial vehicle completes the limit steering test of the whole vehicle,the steering straight rod is bent and deformed.In this paper,the cause analysis and scheme verification of the bending plastic deformation of the straight rod show that the critical stability of the steering straight rod s the root cause of the problem.This paper proposes a set of calculation methods for the stability of the steering rod and the safety factor selection principle which can avoid the occurrence of such problems.

关 键 词：商用车 转向直拉杆 弯曲变形 压杆稳定 临界稳定压力 

分 类 号：U463.45[机械工程—车辆工程]